get someone off the street with the perfect creditials and resume, have them start immediately, fire them when the job is done, and not to have to do any training.
But the reality is that a good person can learn new stuff and do a good job, and that for any company worth its keep, there is a tremendous amount of specialized domain knowledge that can't be transferred in a week.
Maybe a return to more private companies would be a good; I work for one (family owned company), and they do not practice fire at will.
--Tony